I don't know which to get out of these two cards, I'll be running a single monitor at 1920 x 1080 resolution, power consumption and noise difference between the two are of no concern to me, I'm only interested in the performance difference.
If any of you could help me to decide that'd be brilliant thanks
Sapphire HD 7970 VAPOR-X GHZ 3072MB £389.99 inc VAT
MSI GeForce GTX 680 OC Twin Frozr 2048MB £419.99 inc VAT
If any of you could help me to decide that'd be brilliant thanks

Sapphire HD 7970 VAPOR-X GHZ 3072MB £389.99 inc VAT
MSI GeForce GTX 680 OC Twin Frozr 2048MB £419.99 inc VAT